CN102338344B - Brightness enhancement film - Google Patents
Brightness enhancement film Download PDFInfo
- Publication number
- CN102338344B CN102338344B CN 201010234391 CN201010234391A CN102338344B CN 102338344 B CN102338344 B CN 102338344B CN 201010234391 CN201010234391 CN 201010234391 CN 201010234391 A CN201010234391 A CN 201010234391A CN 102338344 B CN102338344 B CN 102338344B
- Authority
- CN
- China
- Prior art keywords
- arc convex
- post
- brightening piece
- arc
- exiting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention provides a brightness enhancement film, which comprises a substrate consisting of a light incoming surface and a light emitting surface, wherein the light emitting surface is provided with a plurality of parallel triangular prism columns, and the triangular prism columns are internally provided with arc-shaped bulges which are periodically arranged. In the invention, as the triangular prism columns are internally provided with the arc-shaped bulges which are periodically arranged, and the height of the arc-shaped bulges and the proportion or frequency of the existence of the arc-shaped bulges in the prism columns can be set when the arc-shaped bulges are arranged, in the assembly of a backlight module, some small gaps can be formed between upper and lower brightness enhancement films, the brightness enhancement films can not be excessively tight, further, the Newton's ring phenomenon caused by optical interferometry can be relieved or eliminated, simultaneously, the surface structure of the brightness enhancement film can not be too level, and thus, the Newton's ring phenomenon caused by the light scattering of the brightness enhancement film can be effectively reduced or eliminated.
Description
Technical field
The invention belongs to field of liquid crystals, relate in particular to the brightening piece that a kind of backlight module of liquid crystal display is applied to.
Background technology
Liquid crystal display is widely used in the electronic products such as personal digital assistant, notebook computer, digital camera, mobile phone, LCD TV, because liquid crystal display itself is not luminous, can realize Presentation Function by backlight module.
Please refer to shown in Figure 1, diagrammatic cross-section for the prior art back light module unit structure, this backlight module 10 comprises reflecting plate 11, be located at the light guide plate 12 of reflecting plate top, be provided with back light 13 in the side of light guide plate 12, comprise successively above the light guide plate 12 lower diffusion sheet 14, lower brightening piece 15, on brightening piece 16 and on diffusion sheet 17.Wherein, brightening piece has " V " shape microstructure prism, is used for improving the brightness in the backlight module certain viewing angles scope.During use, after the light that is produced by the back light 13 of side enters lower diffuser plate 14 and is evenly spread by light guide plate 12, it continues to enter lower brightening piece 15, upper brightening piece 16, refraction and total reflection can occur during through brightening piece up and down in light, so that obtain converging and re-using to a certain degree from the light of brightening piece outgoing.
Please refer to shown in Figure 2ly, be the structural representation of prior art brightening piece, lower brightening piece 20 is by base material 21 and be arranged on the base material several Tp posts 22 of being arranged in parallel and form.Tp post 22 is incorporated into the surface of base material 21, and height, the width of each Tp post 22 are identical, and the ridge height of Tp post 22 is constant, move towards into the inclined-plane of straight line crest line both sides symmetrical.
Because up and down two stacked uses of brightening piece, can produce Newton ring because of the optical interference between rete thus, therefore must utilize the screening flaw of the light diffusion atomizing effect of diffusion sheet to be used for avoiding Newton ring on liquid crystal display, to be observed, and then good liquid crystal display equipment screen image quality and visual sense is provided.In addition, although some backlight module only uses the monolithic brightening piece, but other blooming piece in this brightening piece and the backlight module is assembled when stacked, because the optical interference between the blooming piece also has the Newton ring phenomenon and produces, perhaps the prism surface generation light scattering owing to the regular smooth of this brightening piece own produces rainbow lines phenomenon, and the display frame defective all needs to hide the flaw with diffusion sheet.
In order to reduce cost, manufacturer's idea manages to reduce the blooming piece quantity in the backlight module.At present, liquid crystal display is cancelled the upper diffusion sheet of use substantially, but does like this so that the flaws such as optical interference are easy to be observed, and has reduced the image quality of liquid crystal display.In order to take into account the image quality that reduces cost and liquid crystal display, the at present general practice is the side increase one deck diffusion layer at the brightening piece base material, and this diffusion layer can directly process the diffusion structure that one deck has diffusion at base material.
Existing brightening piece has base material, diffusion layer and lustre adding layer three-decker, although slight reduction some Material Costs, but improved difficulty of processing and (be three-decker, the comparatively loaded down with trivial details and obviously minimizing of production material of technique), the yield of product still can't obtain more stable assurance, therefore still can't effectively reduce production cost.The present invention directly interferes the principle of line and rainbow line from research, and then the structure of change brightening piece, fundamentally lower even eliminate and interfere line, effectively lower simultaneously the generation of the rainbow line of brightening piece itself, on reducing, in the diffusion sheet, guaranteed the image quality of liquid crystal display and effectively reduced production cost.
Summary of the invention
The present invention provides a kind of brightening piece that can alleviate or eliminate optical interference line and rainbow line for the technical matters of the demonstration image quality flaw that solves the optical interference line that occurs in the prior art and rainbow line and cause.
The present invention is achieved through the following technical solutions:
A kind of brightening piece comprises base material, and described base material comprises an incidence surface and an exiting surface, is provided with the Tp post that several are arranged in parallel on the described exiting surface, the arc convex that has periodic arrangement in the described Tp post.
Brightening piece provided by the invention, described brightening piece comprises base material, is provided with the Tp post that several are arranged in parallel on the exiting surface of described base material, the arc convex that has periodic arrangement in the described Tp post.Ratio or frequency that height by can setting described arc convex when arranging and this arc convex occur in prism columns, when can be implemented in the backlight module assembling, there are some small gaps between two brightening pieces up and down, can not attach too tight, and then alleviate or eliminate because of the caused Newton ring phenomenon of optical interference, simultaneously so that the brightening piece surface irregularity, effectively lower or eliminate the rainbow line phenomenon that produces because of light scattering of brightening piece itself.
Description of drawings
Fig. 1 is the diagrammatic cross-section of back light module unit structure in the prior art;
Fig. 2 is the structural representation of lower brightening piece in the prior art;
Fig. 3 is the structure of light enhancement piece synoptic diagram that the first embodiment of the present invention provides;
Fig. 4 is the structure for amplifying synoptic diagram of I part among Fig. 3;
Fig. 5 is the schematic cross-section of A-A direction among Fig. 3;
Fig. 6 is the schematic cross-section of B-B direction among Fig. 3;
Fig. 7 is the structure for amplifying synoptic diagram of II part among Fig. 6;
Fig. 8 is the structure of light enhancement piece synoptic diagram that the second embodiment of the present invention provides.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Please refer to shown in Figure 3, a kind of brightening piece 30, comprise base material 300, described base material comprises an incidence surface and an exiting surface, be provided with the Tp post 301 that several are arranged in parallel on the described exiting surface, have the arc convex 302 of periodic arrangement in the wherein said Tp post, namely described arc convex can be distributed in the Tp by random and periodical.The present invention can set the height of described arc convex 302 and ratio or the frequency that this arc convex occurs in prism columns when arranging, when can be implemented in the backlight module assembling, there are some small gaps between two brightening pieces up and down, can not attach too tight, and then alleviate or eliminate because of the caused Newton ring phenomenon of optical interference, simultaneously described arc convex can be so that the brightening piece surface irregularity, effectively lowers or eliminate the rainbow line phenomenon that produces because of light scattering of brightening piece itself.
Please refer to shown in Figure 4, each described Tp post comprises the first side 421, the second side 422 and crest line 42, described the first side and the second side extend to exiting surface by the both sides of this crest line respectively, the arc convex that has periodic arrangement on each described Tp post, each described arc convex comprises the first N-Side surf 411, the second N-Side surf 412 and camber line 41, described the first N-Side surf and the second N-Side surf extend to exiting surface by the both sides of this camber line in the first side and the second side respectively, be that described the first N-Side surf 411 extends to exiting surface in the first side 421, the second N-Side surf 412 extends to exiting surface in the second side 422.Certainly, described the first N-Side surf and the second N-Side surf also can not extend to exiting surface, are only stopping behind the extension on the first side and the second side, as long as be formed with arc convex at the Tp post.Wherein, those skilled in the art will appreciate that the projection of described camber line 41 in the vertical directions overlaps with crest line 42.
As a kind of concrete embodiment, arc convex on described adjacent two Tp posts is spaced, particularly, please refer to shown in Figure 3: be provided with adjacent two Tp posts 31 and 32 on the described exiting surface, described Tp post 31 is provided with the first arc convex 311 and the second arc convex 312, Tp post 32 is provided with the 3rd arc convex 321 and the 4th arc convex 322, wherein said the first arc convex 311 between the 3rd arc convex 321 and the 4th arc convex 322, any position that namely described the first arc convex 311 can be between the 3rd arc convex 321 and the 4th arc convex 322.Similarly, described the 3rd arc convex 321 is between the first arc convex 311 and the second arc convex 312, arc convex alternative arrangement like this on the described Tp post 31 and 32 namely forms the spaced situation of arc convex on described adjacent two Tp posts.
Certainly, those skilled in the art is on aforementioned spaced basis, it will also be appreciated that the arrangement of other replacement kind, such as: between the first arc convex 311 and the second arc convex 312 on the described Tp post 31, can be arranged with simultaneously the 3rd arc convex 321 and the 4th arc convex 322, be between two arc convex adjacent on the described Tp post 31, be provided with two projections at described Tp post 32 accordingly.Therefore, it will be apparent to those skilled in the art that on basis of the present invention that according to the needs of actual design, arc convex is arranged on the described Tp post ratio or frequency can arrange arbitrarily, the height of described arc convex is also similar.
Preferably, in order to be beneficial to the designing and making of brightening piece mould, guarantee simultaneously brightening piece outgoing uniformity of light, the arc convex on the described Tp post is positioned at the centre of the adjacent arc convex on the adjacent Tp post.Therefore, the position of arranging of the arc convex on the described brightening piece on the odd column Tp post is consistent, and the position of arranging of the arc convex on the even column Tp post is consistent.
Please refer to shown in Figure 5, described arc convex periodically appears in the microstructure of described Tp post, the first side of described Tp post 50 and the second side intersect at crest line 52 places, the first N-Side surf of described arc convex and the second N-Side surf intersect at camber line 51 places, the length of described camber line 51 (referring to the projection length of arc 51 on crest line 52 directions) is designated as d1, the length of the crest line 52 between the adjacent camber line is designated as d2, described d1: d2=1: 1～1: 20, namely the length of camber line be crest line length between the adjacent camber line 0.05-1 doubly; Further, described d1: d2=1: 2～1: 10, namely the length of camber line be crest line length between the adjacent camber line 0.1-0.5 doubly; Further, described d1: d2=1: 2～1: 5, the length that is camber line is 0.2-0.5 times of crest line length between the adjacent camber line, arrange like this is to guarantee that the arc convex quantity on the Tp post is moderate, can reach the effect that reduces or eliminates optical grains, arc convex again can not be too much on the other hand because prism vertex angle when being 90 ° the light enhancing effect of brightening piece best, and the drift angle of arc convex all is lower than 90 °, and too much arc convex can affect the light enhancing effect of brightening piece.
Please refer to Fig. 6, shown in Figure 7, this sectional view is that the peak from arc convex vertically cuts down, therefore the cross section of Tp post is triangle 72, and the height of described triangle 72 is designated as h1, and described h1 is that the crest line of Tp post is apart from the vertical range of described exiting surface.Because arc convex is spaced in the brightening piece, the therefore cross section from obtaining after the peak of arc convex vertically cuts down, following two kinds of situations are arranged, the first situation: be the cross section of arc convex peak, this cross section is triangle 71; The second situation: the cross section is a plurality of triangle set, the both sides surface intersection line of described arc convex is camber line, described intersecting lens is the set of a plurality of triangular apex in described arc convex cross section, wherein minimum triangle is the section triangle 72 of Tp post, maximum triangle is the section triangle 71 described in the first situation, and described a plurality of leg-of-mutton bases equate with the base of the section triangle 71 of described Tp post.The height of described arc convex structure is designated as h2, and described h2 is that the both sides surface intersection line of arc convex structure is the vertical range of the described exiting surface of peak distance of camber line, also is the height of the maximum triangle 71 in arc convex cross section.For so that arc convex does not affect light enhancing effect and the final thickness of backlight module of brightening piece, the height h2=1.05h1～1.5h1 of described arc convex structure, namely the height of described arc convex structure is 1.05～1.5 times of Tp post height; Further, described h2=1.1h1～1.2h1, namely the height of described arc convex structure is 1.1～1.2 times of Tp post height, in this situation, described arc convex can not affect the light enhancing effect of brightening piece itself, can not affect the thickness of the rear backlight module of assembling yet.
During making, described brightening piece 30 general employings are coated with ultraviolet photocureable material at base material, and then the method by ready die marks and curing molding makes, and described ultraviolet light material is generally esters of acrylic acid; Also can utilize the mould direct heat pressurizing resin material that designs to make.By the brightening piece that aforementioned structure makes, the out-of-flatness so that the surface of brightening piece own becomes can effectively alleviate or eliminate the rainbow line phenomenon that causes because of the smooth generation light scattering in plane; Utilize simultaneously the effective control of height of arc convex structure and the distance between other blooming pieces, so that can not attach to get tension between the blooming piece, and then reduced or eliminated the phenomenons such as Newton ring that cause because of optical interference when brightening piece is stacked.
As the concrete embodiment of another structure of light enhancement piece, please refer to shown in Figure 8, part identical with the first embodiment in this structure no longer illustrates, its difference is: added diffusion particle 83 in the described ultraviolet light material, described diffusion particle can be selected from one or more in silicon dioxide, titania, the epoxy resin; Further, in order to reduce cost, described diffusion particle is preferably silica dioxide granule.For the rete after guaranteeing to solidify has needed diffusion mist degree and high transmitance simultaneously, the mass percent that described diffusion particle accounts for the material of Tp post is 1-40%, the mass percent that is diffusion particle described in the described ultraviolet photocureable material is 1-40% (concentration that is described diffusion particle is 1-40%), further being 3-20%, further is 6-15%.Described diffusion particle is generally circle, and (particle diameter is the diameter of described circle to described particle diameter; If diffusion particle is other shapes, particle diameter is the mean grain size of described diffusion particle) size be 1-20 μ m, the surface quality that can effectively control the rete coating thickness and solidify rear rete is set like this, has guaranteed that the optical property of brightening piece and atomizing hide flaw effect.Further, described diffusion particle is selected from the granulate mixture that particle diameter is 3-5 μ m size, and mean grain size is that the shared ratio of the particle of 3 μ m is higher, is generally more than 60%.Preferably, mean grain size is that the shared ratio of the particle of 3 μ m is 70-90%, and is better according to the brightening piece atomizing screening flaw effect that this ratio is made, and can not affect the display brightness of brightening piece.
Specifically please refer to table 1:
Remarks:
The mass particle mark refers to: diffusion particle accounts for the mass percent of whole ultraviolet photocureable material;
Gain: the brightness behind the increase brightening piece and the ratio that adds brightening piece brightness before.
Data from table 1 can find out, the gain of 3 μ m and the brightening piece that makes after the particle of 5 μ m mixes by a certain percentage is suitable with the gain of the brightening piece with diffusion layer, and atomizing to hide flaw effect also the same with reference sample good.
Embodiment two provided by the invention is improvement of doing on the basis of embodiment one, by in glue, adding diffusion particle so that described brightening piece by the arc convex structure decrease or when eliminating the rainbow line and interfering line, utilize the diffusion atomizing effect of diffusion particle to hide flaw effect, working along both lines, it is bad effectively to eliminate the optics that backlight module occurs, guarantee the demonstration image quality of liquid crystal display, improve product yield.On the other hand, because diffusion particle is added in the glue, only need to once be coated with imprinting moulding and gets final product, more simplify than increasing separately before diffusion layer, and then Effective Raise production efficiency and reduce cost of manufacture.
It is the arcuate structure of mentioning among the embodiment that the both sides surface intersection line of the arc convex structure among above-described embodiment one and the embodiment two has more than, this intersecting lens can be arbitrary curve, as long as the maximum height of described arc convex structure and the relation of prism height meet aforementioned requirement.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. brightening piece, comprise base material, described base material comprises an incidence surface and an exiting surface, be provided with the Tp post that several are arranged in parallel on the described exiting surface, it is characterized in that, the arc convex that has periodic arrangement in the described Tp post, each described Tp post comprises the first side, the second side and crest line, described the first side and the second side extend to exiting surface by the both sides of this crest line respectively, the arc convex that has periodic arrangement on each described Tp post, each described arc convex comprises the first N-Side surf, the second N-Side surf and camber line, described the first N-Side surf and the second N-Side surf are extended to form in the first side and the second side by the both sides of this camber line respectively, the arc length of described arc convex is 0.05-1 times of crest line length between the adjacent camber line, the camber line peak of described arc convex is apart from the vertical range of described exiting surface, for the crest line of Tp post apart from the 1.05-1.5 of the vertical range of described exiting surface doubly.
2. brightening piece according to claim 1 is characterized in that, described the first N-Side surf and the second N-Side surf extend to exiting surface by the both sides of this camber line in the first side and the second side respectively.
3. brightening piece according to claim 1 and 2 is characterized in that, the arc convex on described adjacent two Tp posts is spaced.
4. brightening piece according to claim 3 is characterized in that, the arc convex on the described Tp post is positioned at the centre of the adjacent arc convex on the adjacent Tp post.
5. brightening piece according to claim 1 and 2 is characterized in that, the arc length of described arc convex is 0.2-0.5 times of crest line length between the adjacent camber line.
6. brightening piece according to claim 1 and 2 is characterized in that, the camber line peak of described arc convex is apart from the vertical range of described exiting surface, for the crest line of Tp post apart from the 1.1-1.2 of the vertical range of described exiting surface doubly.
7. each described brightening piece in 2 according to claim 1, it is characterized in that, form in the material of described Tp post and be added with diffusion particle, the mass percent that described diffusion particle accounts for the material of Tp post is 1-40%, and the particle size of described diffusion particle is 1-20 μ m.
8. brightening piece according to claim 7 is characterized in that, described diffusion particle is selected from the granulate mixture that particle diameter is 3-5 μ m size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010234391 CN102338344B (en) | 2010-07-21 | 2010-07-21 | Brightness enhancement film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010234391 CN102338344B (en) | 2010-07-21 | 2010-07-21 | Brightness enhancement film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102338344A CN102338344A (en) | 2012-02-01 |
| CN102338344B true CN102338344B (en) | 2013-05-29 |
Family
ID=45514217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010234391 Active CN102338344B (en) | 2010-07-21 | 2010-07-21 | Brightness enhancement film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102338344B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2545404A (en) * | 2015-12-10 | 2017-06-21 | Polyway Ind Co Ltd | Illuminating device capable of uniformly diffusing light beams and side view mirror assembly including same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5859411B2 (en) * | 2012-09-07 | 2016-02-10 | 富士フイルム株式会社 | Conductive film, display device and touch panel including the same, and method for determining pattern of conductive film |
| TWM519090U (en) | 2015-11-17 | 2016-03-21 | 駿福交通器材股份有限公司 | Light emitter capable of emitting uniform light source |
| CN106547047A (en) | 2017-01-24 | 2017-03-29 | 合肥京东方光电科技有限公司 | A kind of light guide plate, backlight module and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5600455A (en) * | 1994-08-31 | 1997-02-04 | Enplas Corporation | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface |
| US5637958A (en) * | 1995-03-06 | 1997-06-10 | Texas Instruments Incorporated | Grooved anode plate for cathodoluminescent display device |
| CN101595403A (en) * | 2006-12-18 | 2009-12-02 | 可隆股份有限公司 | Optical sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1780464A4 (en) * | 2004-08-06 | 2009-08-19 | Kuraray Co | Light guide plate, production method therefor, and surface light source device provided with it |
-
2010
- 2010-07-21 CN CN 201010234391 patent/CN102338344B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5600455A (en) * | 1994-08-31 | 1997-02-04 | Enplas Corporation | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface |
| US5637958A (en) * | 1995-03-06 | 1997-06-10 | Texas Instruments Incorporated | Grooved anode plate for cathodoluminescent display device |
| CN101595403A (en) * | 2006-12-18 | 2009-12-02 | 可隆股份有限公司 | Optical sheet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2545404A (en) * | 2015-12-10 | 2017-06-21 | Polyway Ind Co Ltd | Illuminating device capable of uniformly diffusing light beams and side view mirror assembly including same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102338344A (en) | 2012-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130194529A1 (en) | Backlight module and display device including the same | |
| JP2010107753A (en) | Liquid crystal display device | |
| CN202647490U (en) | Backlight module and display device | |
| CN108008576B (en) | Diffusion sheet and manufacturing method thereof, backlight module and display device | |
| CN102338344B (en) | Brightness enhancement film | |
| CN102998841A (en) | Display substrate and display device with display substrate | |
| TWI459088B (en) | Backlight module having a light guide plate with prismatic structures and manufacturing method thereof | |
| CN103389531A (en) | Reflecting film manufacturing method and backlight module | |
| WO2014146356A1 (en) | Light guide plate, backlight module, and liquid crystal display apparatus | |
| CN101359066A (en) | Microstructure multifunction optical film diaphragm | |
| US20210223624A1 (en) | Direct-lit backlight source and manufacturing method thereof, display device | |
| CN203286495U (en) | Multi-face-light-emitting LED light source, LED lamp strip and backlight module | |
| CN101178506A (en) | Backlight module | |
| CN103939847B (en) | A kind of diffusion sheet and backlight module thereof | |
| CN103576385A (en) | Backlight module and display device | |
| CN101604097B (en) | Backlight module and liquid crystal display device | |
| CN101191851A (en) | Optical plate | |
| US8425067B2 (en) | Composite diffuser structure and backlight module | |
| CN208818985U (en) | A kind of novel straight down type backlight | |
| CN202158495U (en) | Moire-interference-reducing optical sheet, backlight module and liquid crystal display device | |
| WO2020237956A1 (en) | Direct type blacklight module and liquid crystal display device | |
| CN206440925U (en) | Display device | |
| CN103672615A (en) | Backlight module for imaging projection system | |
| CN204667011U (en) | A kind of light guide plate of uniform in light emission | |
| CN207895196U (en) | Sidelight type backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BYD ELECTRONIC COMPONENT CO., LTD. Free format text: FORMER OWNER: BIYADI CO., LTD. Effective date: 20150901 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150901 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Patentee before: Biyadi Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen helitai photoelectric Co., Ltd Address before: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee before: SHENZHEN BYD ELECTRONIC COMPONENT Co.,Ltd. |